<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>

<script>
    'use strict'
    var jj = [1,2,3,4,5,6]
    for(var i =0;i<jj.length;i++){
        console.log(jj[i]);
    }
</script>

</body>
</html>